Potasium

Potasium, ₁₉K
	Mutiara potasium (ring minyak parafin, soang-soang ~5 mm)
Potasium; potasiyum·
Pabaosan	/pəˈtæsiəm/ (pə-TAS-ee-əm)
Cingakan	klau kapérakan
Bobot atom standar Ar, std(K)	39.0983(1)
Potasium ring tabél périodik
	argon ← potasium → kalsium
Wilangan atom (Z)	19
Watek	golongan 1 (logam alkali)
Période	période 4
Blok	blok-s
Konpigurasi éléktron	[Ar] 4s1
Éléktron per kulit	2, 8, 8, 1
Cecirén pisik
Pase ring STP	padet
Titik lebur	336.7 K (63.5 °C, 146.3 °F)
Titik didih	1032 K (759 °C, 1398 °F)
Kapadetan (nampek s.r.)	0.89 g/cm3
ri kala éncéh (ring t.l.)	0.828 g/cm3
Titik kritis	2223 K, 16 MPa
Panes fusi	2.33 kJ/mol
Panes panguapan	76.9 kJ/mol
Kapasitas panes molar	29.6 J/(mol·K)
Cecirén atom
Paindikan oksidasi	−1, +1 (oksida basa kuat)
Kaéléktronégatipan	skala Pauling: 0.82
Wasa ionisasi	ka-1: 418.8 kJ/mol ; ka-2: 3052 kJ/mol ; ka-3: 4420 kJ/mol ; (malih) ;
Jeriji atom	émpiris: 227 pm
Jeriji kovalén	203±12 pm
Jeriji Van der Waals	275 pm
	Garis spéktral saking potasium
Cecirén liyanan
Rupa alami	primordial
Struktur kristal	kubus mapusat badan (bcc)
Kagelisan swara pales tipis	2000 m/s (ring 20 °C)
Ékspansi térmal	83.3 µm/(m⋅K) (ring 25 °C)
Konduktivitas térmal	102.5 W/(m⋅K)
Resistivitas listrik	72 nΩ⋅m (ring 20 °C)
bacakan magnétik	paramagnétik
Karentanan magnétik molar	+20.8×10−6 cm3/mol (298 K)
Modulus Young	3.53 GPa
Modulus Shear	1.3 GPa
Modulus Bulk	3.1 GPa
Kakatosan Mohs	0.4
Kakatosan Brinell	0.363 MPa
Nomor CAS	7440-09-7
Lelintihan
Panemuan miwah isolasi kapertama	Humphry Davy (1807)
Isotop utama potasium
ε	40Ar
β+	40Ar
	Kategori:Potasium; cingak; pabligbagan; uah; \| pustaka

Versi sané kasurat nénten malih kadukung miwah prasida madué pikobet tampilan. Ledangang anyarin markah panjelajah Ida miwah anggén fungsi cétak panjelajah sané baku.

Potasium utawi Kalium silih tunggil datu kimia antuk simbol K (saking Neo-Latin kalium) miwah wilangan atom 19. Potasium pinaka logam putih masawang pérak sané belek antuk kagetep nganggén tiuk antuk wasa sané akedik.^[5]

Pustaka

↑ Méija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
↑ Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (édisi ka-92nd). Boca Raton, FL: CRC Press. p. 4.122. ISBN 1439855110.
↑ Magnetic susceptibility of the elements and inorganic compounds, ring Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (édisi ka-86). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
↑ Augustyn, Adam. "Potassium/ Chemical element". Encyclopedia Britannica. Kaaksés 2019-04-17. Potassium Physical properties

[CIAAW2013-1] Méija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[2] Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (édisi ka-92nd). Boca Raton, FL: CRC Press. p. 4.122. ISBN 1439855110.

[3] Magnetic susceptibility of the elements and inorganic compounds, ring Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (édisi ka-86). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.

[4] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

[5] Augustyn, Adam. "Potassium/ Chemical element". Encyclopedia Britannica. Kaaksés 2019-04-17. Potassium Physical properties

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